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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Thursday, 06 February 2031 · astronomical night 19:17 → 05:52 (10.59 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:15–18:45: quality 0.1M31 18:45–19:20: quality 0.4M31 19:20–19:35: quality 0.8M31 19:35–21:00: quality 0.7M31 21:00–21:50: quality 0.6M31 21:50–22:10: quality 0.5M31 22:10–22:30: quality 0.4M31 22:30–22:40: quality 0.3observe M31 18:45–19:55M42M42 18:15–18:45: quality 0.1M42 18:45–19:20: quality 0.2M42 19:20–20:00: quality 0.5M42 20:00–22:40: quality 0.4M42 22:40–00:05: quality 0.3M42 00:05–00:40: quality 0.2observe M42 22:15–23:40M45M45 18:15–18:45: quality 0.1M45 18:45–19:20: quality 0.3M45 19:20–21:30: quality 0.6M45 21:30–23:15: quality 0.5M45 23:15–00:05: quality 0.4M45 00:05–00:30: quality 0.3M45 00:30–00:40: quality 0.2observe M45 21:05–22:15observe M45 23:40–00:20NGC 7000NGC 7000 18:15–18:45: quality 0.1NGC 7000 18:45–19:10: quality 0.2NGC 7000 05:20–05:40: quality 0.4NGC 7000 05:40–05:55: quality 0.5NGC 7000 05:55–06:25: quality 0.3NGC 7000 06:25–06:30: quality 0.4NGC 7000 06:30–07:00: quality 0.1observe NGC 7000 05:20–05:55observe NGC 7000 06:05–06:30V1057 CygV1057 Cyg 18:15–18:45: quality 0.1V1057 Cyg 18:45–19:10: quality 0.2V1057 Cyg 05:20–05:40: quality 0.4V1057 Cyg 05:40–05:55: quality 0.5V1057 Cyg 05:55–06:25: quality 0.3V1057 Cyg 06:25–06:30: quality 0.4V1057 Cyg 06:30–07:00: quality 0.1M33M33 18:15–18:45: quality 0.1M33 18:45–19:20: quality 0.4M33 19:20–19:40: quality 0.8M33 19:40–20:55: quality 0.7M33 20:55–22:00: quality 0.6M33 22:00–22:20: quality 0.5M33 22:20–22:40: quality 0.4M33 22:40–22:50: quality 0.3observe M33 19:55–21:05scheduleM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
17:40–18:45 — nothing worth pointing at — 1.08
18:45–19:55 M31 1.17 0.57
19:55–21:05 M33 1.17 0.68
21:05–22:15 M45 1.17 0.54
22:15–23:40 M42 1.42 0.34
23:40–00:20 M45 0.67 0.37
00:20–05:20 — nothing worth pointing at — 5.0
05:20–05:55 NGC 7000 0.58 0.44
05:55–06:05 — nothing worth pointing at — 0.17
06:05–06:30 NGC 7000 0.42 0.33
06:30–07:30 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 45 unknown 19:20–21:40 (good) 89.7° at 16:00 103.7° 1.17
M42 Great Orion Nebula 25 unknown 19:20–23:45 (marginal) 42.9° at 20:50 51.6° 1.42
M45 Seven Sisters 48 unknown 19:20–20:35 (good) 72.5° at 19:05 71.9° 1.83
NGC 7000 North America Nebula 8 unknown 05:20–05:55 (marginal) 87.2° at 12:15 122.7° 1.0
V1057 Cyg 8 unknown 05:20–05:55 (marginal) 87.3° at 12:15 122.7° 0.0
M33 Triangulum Pinwheel 47 unknown 19:20–21:40 (good) 79.1° at 16:50 99.0° 1.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-02-06"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.